Ha! Good question Mark. I guess I make the comment about feeling younger as I base it on those around me. I am just more physically similar to those around me who are 10 years younger than me and most people can't believe my age when I tell them.

It's possible that the looming 40 is catching up with me but I doubt it. I don't think you go from zero aches and pains to hurting all over for no reason. I think it has to do with this PCS business.

Mark I think that's a great idea - that it is the dopamine that has changed. I think that is very likely. I just haven't gotten that "great/invincible" feeling yet from exercise since I hit my head. I'll keep trying.

Thank you for the ideas.